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h1r9: fix usb_vendor_request_reset()

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The bootloader is configured by pin straps on certain pins. We use some
of those for other purposes in r9 which causes the bootloader to
misbehave if the device is reset from software. By switching these pins
from outputs to inputs just before reset this problem is avoided.
This commit is contained in:
Michael Ossmann
2022-09-27 14:45:58 -04:00
committed by Mike Walters
parent ea3b804edf
commit 7a0aec00ef
1 changed files with 19 additions and 0 deletions
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19
firmware/hackrf_usb/usb_api_board_info.c
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@ -33,6 +33,13 @@
#include <stddef.h>
#include <string.h>
#ifdef HACKRF_ONE
#include "gpio_lpc.h"
static struct gpio_t gpio_h1r9_clkout_en = GPIO(0, 9);
static struct gpio_t gpio_h1r9_mcu_clk_en = GPIO(0, 8);
static struct gpio_t gpio_h1r9_rx = GPIO(0, 7);
#endif
usb_request_status_t usb_vendor_request_read_board_id(
usb_endpoint_t* const endpoint,
const usb_transfer_stage_t stage)
@ -123,7 +130,19 @@ usb_request_status_t usb_vendor_request_reset(
const usb_transfer_stage_t stage)
{
if (stage == USB_TRANSFER_STAGE_SETUP) {
#ifdef HACKRF_ONE
/*
* Set boot pins as inputs so that the bootloader reads them
* correctly after the reset.
*/
if (detected_platform() == BOARD_ID_HACKRF1_R9) {
gpio_input(&gpio_h1r9_mcu_clk_en);
gpio_input(&gpio_h1r9_clkout_en);
gpio_input(&gpio_h1r9_rx);
}
#endif
wwdt_reset(100000);
usb_transfer_schedule_ack(endpoint->in);
}
return USB_REQUEST_STATUS_OK;